com.opensymphony.xwork2.config.ConfigurationManager.addConfigurationProvider

     下午 org.apache.catalina.core.StandardContext filterStart
严重: Exception starting filter Struts2
java.lang.NoSuchMethodError: com.opensymphony.xwork2.config.ConfigurationManager.addConfigurationProvider(Lcom/opensymphony/xwork2/config/ConfigurationProvider;)V
    at org.apache.struts2.dispatcher.Dispatcher.init_DefaultProperties(Dispatcher.java:310)
    at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:411)
    at org.apache.struts2.dispatcher.FilterDispatcher.init(FilterDispatcher.java:190)
    at org.texturemedia.smarturls.SmartURLsFilter.init(SmartURLsFilter.java:68)
    at org.apache.catalina.core.ApplicationFilterConfig.initFilter(ApplicationFilterConfig.java:279)
    at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:260)
    at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:105)
    at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4573)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5188)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1409)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1399)
    at java.util.concurrent.FutureTask.run(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)
解决该问题的方法有：第一，检查Struts jar包是否有冲突，就是相同包名多个版本的情况，删除重复的jar包。第二，检查web.xml的配置是否正确。